Medicinecomesinlotsofdifferentpackages.Painkillersinatabletcanmakeyourheadachegoaway.Antibioticcream(抗菌素膏)fromatubecanpreventyourcutsfrombecominginfected.Butcanmedicinecomepackagedinchickeneggs?

AteamofscientistsfromScotlandsay“yes”.They’veengineeredspecialchickensthatlayeggswithdisease-treatingdrugsinside.

Theseeggscomefromchickensthathavebeenengineeredtoproducecertaindrugsinsidetheireggwhites.

Thesedrugsaremadeofmoleculescalledproteins(蛋白质).Animalsmakethousandsofproteins—they’rethemainelementinskinhairmilkandmeat.Sinceanimalscanmakeproteinseasilythey’regoodcandidates(候选者)formakingproteindrugs.

Researchershavealreadymadecowssheepandgoatsproduceproteindrugsintheirmilk.Butchickensarecheapertotakecareofneedlessroomandgrowfasterthantheseotheranimals.ThosequalitiescouldmakechickensabetterchoicetobecomelivingdrugfactoriessaysSimonLillicooftheRoslinInstitutenearEdinburghScotland.

Lillicoandateamofresearcherschangedchickens’DNA—thecodethattellscellshowtomakeproteins—sothatthebirds’cellsmadetwoproteindrugs.Onedrugcantreatskincancerandtheothertreatsanervediseasecalledmultiplesclerosis(多发性硬化).

Thescientistschangedthechickens’DNAsothatthebirdsmadethesedrugsonlyintheireggwhites.Thisprotectsthechickens’bodiesfromthedrugs’possibleharmfuleffectsandmakesiteasyforscientiststocollectthedrugs

1.Ifyoucutyourfingeryoumayuse________tocureit

A.painkillersinatablet

B.antibioticcreamfromatube

C.chickeneggs

D.proteindrugs

2.WhichofthefollowingstatementsisNOTtrue?

A.ScientistsfromScotlandhavesucceededinpackingmedicineintochickeneggs

B.Thedrugsaremadeofmoleculescalledproteins

C.Scientistschosechickensfortheirexperimentsbecausechickeneggstastedelicious

D.Theanimalsaregoodcandidatesformakingproteindrugs

3.Thedrugsinspecialchickeneggscan________

A.treatlungcancer

B.helpreduceheadache

C.changepeople’sDNA

D.